import java.util.Locale;
import java.util.Scanner;

/**
 * @Author: shark爱吃辣椒
 * @Date: 2022-21-16:50
 * @Description:
 */
public class Text2 {
    public static void main(String[] args) {
        Scanner sca = new Scanner(System.in);
        while(sca.hasNext()){
            String str = sca.nextLine();
            String result = str.toLowerCase();
            System.out.println(result);
        }
    }
}
